I try to extend a surface on a simple block but extendsrf will not allow me to select anything? I also tried untrim and again the same thing. Not sure why because there is np error message. Just doesn’t do anything. Has anyone run into this before? Its likely me, I’m a newbie but I’ve done this before a few time with now issue.
A Block instance is a copy of previously modeled geometry that was turned into a Block.
If you have lots of instances of that block, then they will all be the same.
If you want to change a surface in a block instance, you’ll need to Explode the block instance first, so it is replaced with a copy of the original geometry. It will no longer be a block instance, but you can change the geometry.
Thank you John, yes that was it, after exploding, it let me extend.
I only had one instant of the block and though exploding worked, I found another way is to simply select the surface you want to extend, then CTRL C , CTRL V then do the extendsrf and that works well. Don’t have to Explode or rejoin.
With only one instance of a block, I don’t see the advantage of defining a block in the first place. Using and single block definition, and have multiple instances of it provides for several efficiencies.